<template>
  <div class="login">
    <div class="login-box">
      <img src="@/assets/images/logo.png" class="logo" alt="" />
      <el-form
        ref="loginForm"
        :model="loginForm"
        :rules="loginRules"
        class="login-form"
      >
        <div class="rightForm">
          <h3 class="title">富侨汇集团管理系统</h3>
          <el-form-item prop="username">
            <el-input
              v-model="loginForm.username"
              type="text"
              auto-complete="off"
              placeholder="账号"
            >
              <svg-icon
                slot="prefix"
                icon-class="user"
                class="el-input__icon input-icon"
              />
            </el-input>
          </el-form-item>
          <div class="pas-box">
            <el-form-item prop="password">
              <el-input
                v-model="loginForm.password"
                type="password"
                auto-complete="off"
                :type="isPasswordVisible ? 'text' : 'password'"
                placeholder="密码"
                @keyup.enter.native="handleLogin"
              >
                <svg-icon
                  slot="prefix"
                  icon-class="password"
                  class="el-input__icon input-icon"
                />
              </el-input>
            </el-form-item>
            <div class="show-password">
              <i
                v-if="!isPasswordVisible"
                class="el-input__icon el-icon-view show-password-icon"
                @click="showPassword"
              ></i>
              <img
                @click="hidePassword"
                v-if="isPasswordVisible"
                src="@/assets/images/hide-password.png"
                class="hide-password"
                alt=""
              />
            </div>
          </div>
          <el-form-item prop="code">
            <el-input
              v-model="loginForm.code"
              auto-complete="off"
              placeholder="验证码"
              style="width: 63%"
              @keyup.enter.native="handleLogin"
            >
              <svg-icon
                slot="prefix"
                icon-class="validCode"
                class="el-input__icon input-icon"
              />
            </el-input>
            <div class="login-code" @click="refreshCode">
              <!-- <img :src="codeUrl" class="login-code-img" @click="getCode" /> -->
              <!-- <canvas height="38" id="captcha1"></canvas> -->
              <dentify :identifyCode="identifyCode"></dentify>
            </div>
          </el-form-item>
          <el-checkbox
            v-model="loginForm.rememberMe"
            style="margin: 0px 0px 25px 0px"
            >记住密码</el-checkbox
          >
          <el-form-item style="width: 100%">
            <el-button
              :loading="loading"
              size="medium"
              type="primary"
              style="width: 100%"
              @click.native.prevent="handleLogin"
            >
              <span v-if="!loading">登 录</span>
              <span v-else>登 录 中...</span>
            </el-button>
          </el-form-item>
        </div>
      </el-form>
    </div>
  </div>
</template>

<script>
import { getCodeImg } from "@/api/login";
import Cookies from "js-cookie";
import { encrypt, decrypt } from "@/utils/jsencrypt";
import CaptchaMini from "captcha-mini";
import dentify from "./dentify";
export default {
  name: "Login",
  components: { dentify },
  data() {
    return {
      identifyCodes: "1234567890abcdefjhijklinopqrsduvwxyz", //随机串内容,从这里随机抽几个显示验证码
      identifyCode: "",
      codeUrl: "",
      loginForm: {
        username: "",
        password: "",
        rememberMe: false,
        code: "",
        uuid: "",
      },
      isPasswordVisible: false,
      loginRules: {
        username: [
          { required: true, trigger: "blur", message: "请输入您的账号" },
        ],
        password: [
          { required: true, trigger: "blur", message: "请输入您的密码" },
        ],
        code: [{ required: true, trigger: "change", message: "请输入验证码" }],
      },
      // 验证码开关
      captchaEnabled: true,
      loading: false,
      redirect: undefined,
      captchaText: "",
    };
  },
  watch: {
    $route: {
      handler: function (route) {
        this.redirect = route.query && route.query.redirect;
      },
      immediate: true,
    },
  },
  created() {
    this.getCookie();
    this.identifyCode = "";
    setTimeout(() => {
      this.getCode(this.identifyCodes, 4);
    }, 1000);
  },
  methods: {
    showPassword() {
      this.isPasswordVisible = true;
    },
    refreshCode() {
      this.identifyCode = "";
      this.getCode(this.identifyCodes, 4);
    },
    hidePassword() {
      this.isPasswordVisible = false;
    },
    getCode(o, l) {
      for (let i = 0; i < l; i++) {
        //通过循环获取字符串内随机几位
        this.identifyCode +=
          this.identifyCodes[this.randomNum(0, this.identifyCodes.length)];
      }
    },
    randomNum(min, max) {
      return Math.floor(Math.random() * (max - min) + min);
    },
    getCookie() {
      const username = Cookies.get("username");
      const password = Cookies.get("password");
      const rememberMe = Cookies.get("rememberMe");
      this.loginForm = {
        username: username === undefined ? this.loginForm.username : username,
        password:
          password === undefined ? this.loginForm.password : decrypt(password),
        rememberMe: rememberMe === undefined ? false : Boolean(rememberMe),
      };
    },
    handleLogin() {
      this.$refs.loginForm.validate((valid) => {
        if (valid) {
          if (
            this.loginForm.code.toLowerCase() !==
            this.identifyCode.toLowerCase()
          ) {
            this.$message.error("验证码错误");
            this.refreshCode();
            return;
          }
          this.loading = true;
          if (this.loginForm.rememberMe) {
            Cookies.set("username", this.loginForm.username, { expires: 30 });
            Cookies.set("password", encrypt(this.loginForm.password), {
              expires: 30,
            });
            Cookies.set("rememberMe", this.loginForm.rememberMe, {
              expires: 30,
            });
          } else {
            Cookies.remove("username");
            Cookies.remove("password");
            Cookies.remove("rememberMe");
          }
          this.$store
            .dispatch("Login", this.loginForm)
            .then(() => {
              this.$router
                .push({ path: this.redirect || "/user/profile" })
                .catch(() => {});
            })
            .catch(() => {
              this.loading = false;
              if (this.captchaEnabled) {
                this.refreshCode();
              }
            });
        }
      });
    },
  },
};
</script>

<style rel="stylesheet/scss" lang="scss">
.pas-box {
  position: relative;
}
#captcha1 {
  width: 135px;
  height: 38px;
}
.img {
  width: 100%;
  height: 100%;
}
.login {
  height: 100%;
  background-image: url("../assets/images/bg.jpg");
  background-size: cover;
}
.login-box {
  background: rgba(15, 64, 245, 0.14);
  width: 100%;
  height: 100%;
  display: flex;
  justify-content: space-between;
  padding: 5vh 15vh 0 5vh;
  .logo {
    width: 250px;
    height: 250px;
  }
}
.title {
  margin-top: 10px;
  margin-bottom: 60px;
  text-align: center;
  color: #707070;
  font-weight: 500;
  font-size: 36px;
  color: #3d3d3d;
}

.login-form {
  border-radius: 6px;
  background: #ffffff;
  // width: 1223px;
  height: 482px;
  margin-top: 22vh;
  .rightForm {
    width: 490px;
    height: 482px;
    padding: 45px;
  }
  .el-input {
    height: 38px;
    input {
      height: 38px;
    }
  }
  .input-icon {
    height: 39px;
    width: 14px;
    margin-left: 2px;
  }
}
.login-tip {
  font-size: 13px;
  text-align: center;
  color: #bfbfbf;
}
.login-code {
  width: 33%;
  height: 38px;
  float: right;
  img {
    cursor: pointer;
    vertical-align: middle;
  }
}
.el-login-footer {
  height: 40px;
  line-height: 40px;
  position: fixed;
  bottom: 0;
  width: 100%;
  text-align: center;
  color: #fff;
  font-family: Arial;
  font-size: 12px;
  letter-spacing: 1px;
}
.login-code-img {
  height: 38px;
}
</style>
